Cardiology Flashcards
(285 cards)
At what stage in the cardiac cycle do the coronary arteries fill with blood
Diastole
What is Sterling’s law of the heart / Frank-starling
The greater the stretch of the heart muscles = the greater the force pumped from the heart
Where is a collapsing/water hammer pulse heard
Aortic regurgitation
Define pulses alternans
A mix of weak and strong pulses
Define Pulsus bigeminus
A premature ectopic beat following the normal beat
Define Pulsus Bisferiens
a Double pulse
In what condition is Pulsus bisferiens heard in
Hypertrophic cardiomyopathy and mixed aortic valve disease
What causes S1 sound
Mitral and tricuspid valve closure
What causes S2 sound
Aortic and pulmonary valve closure
What causes an S3 sound
HF
What causes an S4 soundd
Gallop rhythm when the walls harden
Carotid sinus syndrome vs Vasovagal syndrome
CSS affects elderly vs Young people
Define First degree Heart Block
PR INterval >0.22 seconds
Define Mobitz Type I block
Progressive PR interval prolongation til a p wave is skipped
Define Mobitz type II Hear block (HB 2)
All PR intervals are the same but the p wave skips randomly
Define a complete heart block
Ventricular rhythm is sustained but electrical impulses fail to reach to the ventricles at all.
So they both beat at different rhythms to each other
What artery is most commonly affected in MIs
Right coronary artery occlusion
What parts of an ECG indicate inferior wall MIs (right coronary artery occlusion)
STEMIs in II, III and aVF
What condition can cause heart block
Lyme Disease
What medications can cause heart block
beta blockers
CCBs
Adenosine
Amiodarone
Digoxin
What heart block is seen in Lyme Disease
Third degree AV block
Normal QRS complex size
3 boxes - 120 ms
Affects of bundle branch blocks on QRS complexes
Widen them (as delayed time)
What does the pneumonic WiLLiaM MaRRoW show us
LBBB = W in V1, M in V6
RBBB = M in V1, W in V6